Results 31 to 40 of about 437,144 (304)

Biosorption of Heavy Metal Ions Using Green Algae (Sargassum Wightii) – Equilibrium, Kinetics and Thermodynamic Studies [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2023
The removal of heavy metal ions (Cr, Pb, and Zn) present in aqueous solutions has been examined using Sargassum Wight (SW) - brown algae – as an organic adsorbent. The functional groups of SW were determined by FT-IR analysis before and after heavy metal
Yogeshwaran Venkatraman, Arunkumar Priya
doaj   +1 more source

Adsorption of Copper, Zinc and Nickel Ions from Single and Binary Metal Ion Mixtures on to Chicken Feathers

open access: yesAdsorption Science & Technology, 2002
Certain industries often produce mixtures of heavy metal ions in their waste products. Because of the nature of heavy metal ions and the adsorption process, such metal ions can compete with each other for the sorption sites on an adsorbent during ...
Sameer Al-Asheh   +2 more
doaj   +1 more source

Unique, non‐Earthlike, meteoritic ion behavior in upper atmosphere of Mars [PDF]

open access: yes, 2017
Interplanetary dust particles have long been expected to produce permanent ionospheric metal ion layers at Mars, as on Earth, but the two environments are so different that uncertainty existed as to whether terrestrial-established understanding would ...
Anders   +40 more
core   +1 more source

Hemicyanines-potential heavy metal ion sensors

open access: yesIOP Conference Series: Materials Science and Engineering, 2020
Abstract The synthesis of four hemicyanine dyes are reported. Varying the donor-acceptor properties of hemicyanine dyes has a drastic influence on the aggregation properties and photophysical properties. 4-(N, N-dimethyl)amino benzaldehyde, 4-nitro benzaldehyde and 4-hydroxy benzaldehyde are used as donors.
G S Gopika   +6 more
openaire   +1 more source

Polyazulene based materials for heavy metal ions detection [PDF]

open access: yesIOP Conference Series: Materials Science and Engineering, 2017
Azulene is a special monomer used to functionalize electrodes due to its high polarizability, because it makes possible spontaneous electron drift from the five-membered ring to the seven-membered ring. Our study concerns the electrochemical characterization by cyclic voltammetry, differential pulse-voltammetry and rotating disk electrode voltammetry ...
Alexandra Oprisanu   +5 more
openaire   +1 more source

Evidence for a Ru$^{4+}$ Kondo Lattice in LaCu$_3$Ru$_4$O$_{12}$

open access: yes, 2016
Rare $d$-electron derived heavy-fermion properties of the solid-solution series LaCu$_3$Ru$_x$Ti$_{4-x}$O$_{12}$ were studied for $1 \leq x \leq 4$ by resistivity, susceptibility, specific-heat measurements, and magnetic-resonance techniques.
Buettgen, Norbert   +9 more
core   +1 more source

Electric Dipolar Kondo Effect Emerging from Vibrating Magnetic Ion

open access: yes, 2012
When a magnetic ion vibrates in a metal, it inevitably introduces a new channel of hybridization with conduction electrons and in general, the vibrating ion induces electric dipole moment. In such a situation, we find that magnetic and non-magnetic Kondo
Hotta, Takashi, Ueda, Kazuo
core   +1 more source

The migration process and temperature effect of aqueous solutions contaminated by heavy metal ions in unsaturated silty soils

open access: yesHeliyon
Adsorption-desorption experiments of three heavy metal ions (i.e., lead, copper, cadmium) in silty soil were carried out at different temperatures, and the microscopic characteristics of silty soil loaded with the three heavy metal ions were analyzed.
Bing Bai, Fan Bai, Jianpeng Hou
doaj   +1 more source

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

open access: yesMembranes, 2023
The presence of heavy metal ions in polluted wastewater represents a serious threat to human health, making proper disposal extremely important. The utilization of nanofiltration (NF) membranes has emerged as one of the most effective methods of heavy ...
Cristina Ileana Covaliu-Mierlă   +2 more
doaj   +1 more source

The removal of plumbum and zinc using activated carbon [PDF]

open access: yes, 2008
This project was about removing heavy metal, Pb and Zn using activated carbon and to investigate the effect of activated carbon dosage and pH of heavy metal solution during the experiment.
Asong, Angkat
core  

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